diff --git a/88-tar1090.conf b/88-tar1090.conf
index 16eb8a5..9d253f2 100644
--- a/88-tar1090.conf
+++ b/88-tar1090.conf
@@ -11,7 +11,7 @@ url.redirect += (
   "^/tar1090$" => "/tar1090/"
 )
 
-$HTTP["url"] =~ ".*/chunks/chunk_.*gz$" {
+$HTTP["url"] =~ "^/tar1090/chunks/chunk_.*gz$" {
     setenv.add-response-header += (
         "Access-Control-Allow-Origin" => "*",
         "Cache-Control" => "must-revalidate",